What information does the atomic mass of an element provide?

a.
the sum of electrons and protons in an atom

b.
the difference between the number of protons and electrons

c.
the number of protons and neutrons in an atom

d.
the number of isotopes

Afisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. it takes a time of 2.70 s for the boat to travel from its highest point to its lowest, a total distance of 0.700 m. the fisherman sees that the wave crests are spaced a horizontal distance of 6.50 m apart. a. how fast are the waves traveling? b. what is the amplitude a of each wave?